"Using Claude to Check the Current Weather Without an API Key" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Scan and fix email auth (SPF, DMARC, DKIM, MX, blacklists, expiry) + DNS checks. Validated fixes.
Email posture for any domain: can it receive mail, can it be spoofed? MX, SPF and DMARC.
Crevio's MCP server lets an agent run a real online business, not just read from one. It exposes a delegation surface (ask_crevio, start_task, wait_for_run, send_message, resolve_approvals) plus code_search and code_execute for calling the full Crevio REST API - products, customers, orders, email, socials, and sites.
Read-only Amazon SES observability: search events, inspect bounces, pull delivery stats.
Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.
Analyze, audit, fix and diff HTML, MJML, Maizzle and React Email across 21 email clients.
Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.
Emailable MCP — wraps the Emailable email verification API (emailable.com)
Coldrig — cold-email infra run by your agent: 28 MCP tools, live sending, free sandbox. $99/mo.
Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.
Manage Subscribers, Broadcasts, Sequences, Automations, and reporting in Mailrith.
Keyless email checks: disposable, role, and free-provider detection, MX, and typo suggestions.
Let ChatGPT, Claude & Cursor use your Mac: email, calendar, iMessage, Teams, files. Local, free.
Hunter.io MCP — wraps the Hunter.io email finder & verification API (hunter.io)
could-have-been-email MCP — wraps StupidAPIs (requires X-API-Key)
7 sales-outreach persona and skill products plus deliverability tooling over MCP: audit_copy scores email copy out of 100 for spam triggers and personalization, sequence_planner builds opt-out-respecting cadences, subject_line_scorer ranks up to 20 lines, utm_builder produces tracking URLs, and get_free_skill loads any product's complete free gateway skill.
Find and enrich leads, run multi-channel outreach, and manage the sales pipeline.
An AI agent that runs your online business: products, orders, customers, email, and sites.
Read your AI-written daily briefing and retune the filter behind it: feeds, newsletters, topics.
send-that-email MCP — wraps StupidAPIs (requires X-API-Key)
